Exponent Function on a Stored Procedure

I am using an exponent function in an Oracle Stored Procedure (Oracle 7.3.4). the exponent function is causing the stored procedure to run a long time. If I take the exponent function out the procedure runs in 2 minutes to process 289000 records, when I put the statement back in the procedure runs in 17 minutes. We are running oracle in HP Unix.
The format of the statemenT is
VARIABLE = EXP((VAR1 - VAR2)/VAR3)
Does anyone have any reason why the EXP function causes the procedure to run longer?

Hello,
I think that my question was not clear enough. I did not got any reply to my question.
But after several hours of investigation (ASI: Apex Scene Investigation) I discovered a good way to the solution.
And that is: Collections!!
I will close this thread as answered.
Greetings
Carlos
Edited by: IsolraC on Jan 14, 2009 11:24 AM

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